1,721,063 research outputs found
Relating adjoint negations with strong adjoint negations
No full text[EN]Adjoint negations, whose definition is based on the implications of an adjoint triple, arise as a generalization of residuated negations.
Recently, interesting properties of these negation operators have been introduced [5]. In this paper, a comparative survey with weak negations
studied by Trillas, Esteva and Domingo [10, 13] is presented. Moreover,
the relationship between weak and strong negations, introduced by these
authors, is extended to adjoint negations. These technical developments
lead us to increase the number of applications of adjoint negations.Peer reviewe
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
On Product Logic with Truth-constants
Full text linkProduct Logic Π is an axiomatic extension of Hájek's Basic Fuzzy Logic BL coping with the 1-tautologies when the strong conjunction & and implication → are interpreted by the product of reals in [0, 1] and its residuum respectively. In this paper we investigate expansions of Product Logic by adding into the language a countable set of truth-constants (one truth-constant r\#304; for each r in a countable Π-subalgebra of [0, 1]) and by adding the corresponding book-keeping axioms for the truthconstants. We first show that the corresponding logics Π() are algebraizable, and hence complete with respect to the variety of Π()-algebras. The main result of the paper is the canonical standard completeness of these logics, that is, theorems of Π() are exactly the 1-tautologies of the algebra defined over the real unit interval where the truth-constants are interpreted as their own values. It is also shown that they do not enjoy the canonical strong standard completeness, but they enjoy it for finite theories when restricted to evaluated Π-formulas of the kind r\#304; → φ, where r\#304; is a truth-constant and φ a formula not containing truth-constants. Finally we consider the logics ΠΔ(), the expansion of Π() with the well-known Baaz's projection connective Δ, and we show canonical finite strong standard completeness for them.Fil: Savický, Petr. Academy of Sciences of the Czech Republic; República ChecaFil: Cignoli, Roberto Leonardo Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderon; ArgentinaFil: Esteva, Francesc. Institut d’Investigacio en Intelligencia Artificial; EspañaFil: Godo, Lluis. Institut d’Investigacio en Intelligencia Artificial; EspañaFil: Nogura, Carles. Institut d’Investigacio en Intelligencia Artificial; Españ
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
First order SMTL logic and quasi-witnessed models
No full text6 páginas.-- Trabajo presentado al XV Congreso Español sobre Tecnologías y Lógica Fuzzy.In this paper we prove strong completeness
of axiomatic extensions of First Order SMTL
logic adding the so-called quasi-witnessed axioms
with respect to quasi-witnessed Models.
In order to achieve this result, we make use of
methods that are typical of Classical Predicate
Logic, and have been later generalized
by P. H ajek to cope with Predicate Fuzzy
Logic. At the end of the paper, we obtain,
as a particular case, the result of strong completeness,
already proven by M.C. Laskowski
and S. Malekpour, for Product Predicate
Logic with respect to quasi-witnessed Models.The authors acknowledge
partial support of the Spanish projects MULOG2
TIN2007-68005-C04-01/04, "Agreement Technologies"
(CONSOLIDER CSD 2007-0022, INGENIO
2010) and the Generalitat de Catalunya under the
grant 2009-SGR-1434. The rst author is supported
by grant JAEPredoc, n.074 from CSIC.Peer reviewe
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